If the reviews of your concert describe your singing as orotund, you can pop open the champagne — your reviewers have noticed your full, rich sound.

On the other hand, if you've just given a speech and the TV commentators ridicule it as orotund, moralistic, and meaningless, you might want to drop out of sight for a few weeks. You've been called out for your pompous, self-important style. Orotund comes from the Latin word ore, "mouth," and rotundo, "make round." So orotund sounds are what you make with a rounded mouth, which is good if you're singing, but pretentious if you're not.

Definitions of orotund

adj ostentatiously lofty in style

bombastic, declamatory, large, tumid, turgid
given to rhetoric, emphasizing style at the expense of thought

adj (of sounds) full and rich

orotund tones”
pear-shaped, rotund, round
(of sound) having marked deepness and body

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